Apparatus for agitating liquid material.



R. S. TOWNE. APPARATUS FOR AGITATING LIQUID MATERIAL. APPLICATION FILED JUNE 25, 909.

Patented Mar. 15, 1910 I 1 Wm! mlw umn To all whom it may concern:

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-ROIBERT SAFFORD TOWNE, OF NEw YoRK, N. Y.

APPARATUS AGITATING LIQUID MATERIAL.

Specification of Letters Patent.

Patented Mar. 15, 1910.

Application filed June.25, 1909. Serial No. 504,216.

'Be it known. that 1, ROBERT SAFFORD TOWNE, a citizen of the United States,"re-

' seen, there ore,"that when the tank is only siding in the-city, county, and State of New York, (whose post-ofiice address is 82 Beaver street, in saidcity,)' have invented certain new-and useful Improvements in A para *t-uses for Agitating LiquidMateri al,o which the following is a specification.

My invention relates to apparatuses for stirring or agitating by theuse of compressed air orgas, sands, shines, or concentrates'in the cyanid-or other similar metallurgical processes, or other materials which it-may be desired to stir in a liquid or'partially. liquid state; and the principal object of my invention is to provide an apparatus in which the agitation can be carried on continuously during the operations of filling and discharging the tank. J

in agitatorsemploying acirculation shaft, the on y discharge of'the circulating liquid is at the to I of said'shaft. It can readily be partiall filled, a very strong air current is require to force the liquid up through-said shaft, and with material of high specific gravity, such as some iron ores, the circulation' cannot be carried onunder such con- 7 forms t ereof.--

ditions and the apparatus becomes clogged by the massing of the heavy material at the bottomv of the tank. These. objections are overcome by my invention as will be seen from the following specification, accompanied by drawings illustrating. the same,

- in which- Figure 1 is an elevation of my apparatus and Fi s. 2 and 3 elevations of modified Referring to Fi in which the material is to be agitated, and a circulation shaft located centrally in the tank, and D anair jet. This shaft is so constructed andpositioned thatthe uppermost discharge is below the top of the tank and the bottom communicates with the tank 'fromt e so asto permit free access of the material to: "the same and is v rovided with apertures (G) in its sides. be number, arrangement and size of these a ertures may be varied to the character of t 'e='-ma.teria'l to 'beltreated, but .I v refer to; incline them downwardly set forth.

The uppermost discharge maybe through- -the open top oi the shaft, but for the purliquid.

.( neath charged back 'into the tank through aperg. 1--A- represents a tank inside for the purpose hereinafterpose of increasing the agitation, I prefer to provide the shaftB near its top with discharge pipes (G), which are bent or otherwise constructed so as todischarge the material obliquely against thesides of the tank A; thus imparting a rotary motion to 'the material in the tank, in addition to the vertical circulation. In this construction the shaft is carried a suitable distance'a'bove .the pipes.(G) to prevent discharge from the top. The shaft in the construction of Fig. 1, by preference is supported by feet (F) and stays (-E). 'The tank is emptied through the discharge pipe (P), located at some suitable point in or near the bottom of the tank but .suiiiciently'removed from the noz- 'zl'e of the airjet so as to prevent air entering the discharge pipe with the discharging The '0 eration of my apparatus is as follows! aterial being fed intothe tank by means of a pipe at the top or any-convenient method, a current of air is introduced to the circulation shaft by meansof air jet carrying with it material from bethe circulation shaft which is dis apertures are inclined do'wnwardl from the inside, the discharge through t e sub- ,inerged apertures is lessened. T a' paratus may also be provided with valves fiir closing the same when the tank is full so that thecirculation will be carried on through the extreme oints of the communication between the s aft and tank.

"In Figs. 2 and; 3 the circulation shaft is showuoutside of the tank. In Fig. 2, the circulation, when the tank is only partly filled,- is efiect'ed through pipes H connecting 11o the apertured shaft with the tank, and con- By closing. these I v trolled b'y valves (K).

es .G or over the top but that. if the zontal, some material is discharged through the submerged apertures,

' material tank, a circulation shaft commucharged through the apertures (C). This 'furtheragit-ation as desired. It is apparent with vaives, the entire circulation may be restricted to the top outlet, and when agitating a full charge this may become desirable. Fig. 3 shows an outside shaft surmounted by a tank (R) to receive .the material disis not a desirable construction owing to the difficulty of handling the material discharged through the apertures (G) into tank (R), but it serves to illustrate the variety of construction to which my invention may be adapted. In this form of apparatus, the material discharged into tank R could be pumped to the filter or back into tank A for nicating therewith at a point intermediate the extremes of circulation through said shaft. 2. In an agitating: )paratus comprising a material tank, a circu ation shaft communicating therewith at a plurality of points intel-mediate the extremes of circulation through said shaft. p

' 3. In an agitating apparatus comprising a material tank, a circulation shaft communicating therewith at its bottom and points intermediate its top and bottom.

4. In an agitating apparatus comprising a material tank, a circulation shaft communr eating therewith at its top, bottom and points intermediate thereof.

5. In an agitating apparatus, a circulation shaft provided with a plurality of series of apertures in its sides.

6. In an'agitating apparatus, a circulation shaft provided with apertures in its sides inclined downwardly from the inside.

7. In an agitating apparatus comprising a material tank, a circulation shaft provided. with discharge pipes near its top constructed so as to discharge the material into the said tank in such manner as toimpart a rotary motion thereto.

8. In an agitating apparatus comprising a material tank, a centrally located circulation shaft communicating with said tankthrough its bottom and apertures in its sides, and provided with supporting feet at its lower end. i I

9. An agitating apparatus comprising a material tank, a circulation shaft having apertures in its sides, said shaft communieating with said tank through said apertures and-at the bottom, and means for causing material. to flow upwardlyinto said shaft.

10. An apparatus com rising a material tank having a tapering ottom, a circulation shaft having apertures in its sides, centrally located in said tank and communicat .ingtherewith a t its lower end, and means for causing the material to flo'w upwardly into said shaft and out through said apertures.

ROBERT SAFFORD TOWNE. Witnesses '2' MURRAY SAYER,

W. F. GILLESBY. 

